View Full Version : Yamaha Battery

10-14-2009, 05:01 PM
I think this is a simple question. I have a 1995 Yamaha 25JEO outboard engine. The battery is dead. The tech manual specifies a 12 volt 40 to 70 AH rated battery. Most of the marine batteries I am locating are greater than 70AH rating - will using a higher rated battery be harmful to the electrical components of the outboard engine? If so; where can I purchase a battery in the 40 to 70 AH range? Thanks

10-15-2009, 01:02 AM
"No it will be fine, just gives you more cranking time and the ability to run more accessories longer without the battery going flat. If it goes flat it will also take longer to recharge fully."